Question

answer this fast pls...
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Answer 1

1) Carbon. ... The reason is carbon's ability to form stable bonds with many elements, including itself. This property allows carbon to form a huge variety of very large and complex molecules. In fact, there are nearly 10 million carbon-based compounds in living things!
2) Total carbon is conserved. Carbon dioxide in the atmosphere causes heat radiated from ground level to be reflected back towards the earth's surface. This changes the thermal equilibrium of the earth, preventing the emission of heat from the earth, and raising the average equilibrium temperature of the earth.
3) They act separately but are dependent on each other because the carbon cycle gives off oxygen for the oxygen cycle to use, and in turn, the oxygen cycle emits carbon dioxide (CO2) which goes back into the carbon cycle. Plants are the main vehicle by which the oxygen and carbon cycles are connected.
4) Oxygen Cycle. The oxygen cycle is the cycle that helps move oxygen through the three main regions of the Earth, the Atmosphere, the Biosphere, and the Lithosphere. ... The Oxygen cycle is how oxygen is fixed for freed in each of these major regions. In the atmosphere Oxygen is freed by the process called photolysis.
5) see pic
6) nitrogen cycleNitrogen fixation is the process by which atmospheric nitrogen is converted by either a natural or an industrial means to a form of nitrogen such as ammonia. In nature, most nitrogen is harvested from the atmosphere by microorganisms to form ammonia, nitrites, and nitrates that can be used by plants.
7) Nitrogen fixation is the process by which nitrogen gas from the atmosphere is converted into different compounds that can be used by plants and animals. There are three major ways in which this happens: first, by lightning; second, by industrial methods; finally, by bacteria living in the soil.
8) Nitrate is the form of nitrogen most used by plants for growth and development. Nitrate is the form that can most easily be lost to groundwater. Ammonium taken in by plants is used directly in proteins. This form is not lost as easily from the soil.

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Answer 2

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The oxygen cycle is the biogeochemical transitions of oxygen atoms between different oxidation states in ions, oxides, and molecules through redox reactions within and between the spheres/reservoirs of the planet Earth.

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